Wiseco K20/24 87mm Bore Pistons at 13.7:1 compression ratio maximize naturally aspirated performance and efficiency. This four-piston kit includes wrist pins, retaining locks, and complete ring sets for seamless assembly. Precision-forged from in-house dedicated stock, these pistons deliver optimal strength and minimal weight for responsive engine behavior. Advanced features include strategically engineered valve pockets, complex crown geometry, and steel nitride/Napier XX rings for extended service intervals. The optimized skirt profile reduces friction and side loading while maintaining rigidity—perfect for high-revving naturally aspirated K-series builds seeking maximum power density and reliability without forced induction.
